USN-8895-1

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Source
https://ubuntu.com/security/notices/USN-8895-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8895-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8895-1
Upstream
Related
Published
2026-10-07T13:12:22Z
Modified
2026-10-08T12:58:02Z
Summary
sudo vulnerability
Details

It was discovered that Sudo did not properly handle time-based access restrictions when sudoers rules used NOTBEFORE or NOTAFTER with timestamps omitting the trailing timezone indicator. A local attacker could possibly use this issue to execute commands outside the intended time window by manipulating the TZ environment variable.

References

Affected packages

Ubuntu:22.04:LTS / sudo

Package

Name
sudo
Purl
pkg:deb/ubuntu/sudo?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.9.9-1ubuntu2.7

Affected versions

1.*
1.9.5p2-3ubuntu2
1.9.9-1ubuntu2
1.9.9-1ubuntu2.1
1.9.9-1ubuntu2.2
1.9.9-1ubuntu2.3
1.9.9-1ubuntu2.4
1.9.9-1ubuntu2.5
1.9.9-1ubuntu2.6

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "sudo",
            "binary_version":  "1.9.9-1ubuntu2.7"
        },
        {
            "binary_name":  "sudo-ldap",
            "binary_version":  "1.9.9-1ubuntu2.7"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2026-96512",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:22.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8895-1.json"

Ubuntu:24.04:LTS / sudo

Package

Name
sudo
Purl
pkg:deb/ubuntu/sudo?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.9.15p5-3ubuntu5.24.04.4

Affected versions

1.*
1.9.14p2-1ubuntu1
1.9.15p5-3ubuntu1
1.9.15p5-3ubuntu3
1.9.15p5-3ubuntu4
1.9.15p5-3ubuntu5
1.9.15p5-3ubuntu5.24.04.1
1.9.15p5-3ubuntu5.24.04.2
1.9.15p5-3ubuntu5.24.04.3

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "libnss-sudo",
            "binary_version":  "1.9.15p5-3ubuntu5.24.04.4"
        },
        {
            "binary_name":  "sudo",
            "binary_version":  "1.9.15p5-3ubuntu5.24.04.4"
        },
        {
            "binary_name":  "sudo-ldap",
            "binary_version":  "1.9.15p5-3ubuntu5.24.04.4"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2026-96512",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8895-1.json"

Ubuntu:26.04:LTS / sudo

Package

Name
sudo
Purl
pkg:deb/ubuntu/sudo?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.9.17p2-1ubuntu3.2

Affected versions

1.*
1.9.17p2-1ubuntu1
1.9.17p2-1ubuntu2
1.9.17p2-1ubuntu3
1.9.17p2-1ubuntu3.1

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "libnss-sudo",
            "binary_version":  "1.9.17p2-1ubuntu3.2"
        },
        {
            "binary_name":  "sudo",
            "binary_version":  "1.9.17p2-1ubuntu3.2"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2026-96512",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:26.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8895-1.json"